Camera slows down zooming into an object while in viewport
The camera has a limited amount it can &quot;zoom&quot;, and it doesn't move when you zoom it. There are a number of ways you can navigate despite this. The easiest is probably to &quot;snap&quot; the camera to the selected object by pressing the decimal (.) button on your Numpad. If you need even finer control, you can enter walk mode by pressing Shift + ` (same key as ~). You can then navigate with the WASD keys. Press Esc to return to normal navigation.